Heater mounting



June 18, 1929. J. H. CARMEAN 7175% HEATER MOUNTING Filed Mar c h 12, 92832 2 Sheets-Sheet 1 Ill INVEJV TOR.

Z9 36 L/czm 5/7 Car/776cm JTTORVFYS.

June 18, 1929. CARMEAN 1,717,550

HEATER MOUNTING Filed March 12, 1928 2 Sheets-Sheet 2 (ems/9. med/2 A TTORNEYS.

PATENT OFFICE.

JAMES H. CARMEAN, OF KANSAS CITY, MISSOURI.

HEATER MOUNTING.

Application filed March 12, 1928. Serial No. 260,964.

My invention relates to electrical heating devices and more particularly to the combination of an electrically energized coil member with an air impeller whereby air may be driven over the coil for heating the air for circulation, the principal objects of the present invention being to mount a heating member removably on an air impelling device, to adapt a heating member for association with standard electric fans, and to control the currents of air driven by a fan through the heating member.

In accomplishing these and other objects of the invention I have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings, wherein:

Fig. 1 is a perspective view of an electrical heater constructed in accordance with my invention. 1

Fig. 2 is a vertical, longitudinal, sectional View through the heating member and supporting housing drum.

Fig. 3 is a front elevational view, the lower portion of the housing being in section to better disclose structure.

Fig. 4: is a detail perspective view of the elements separated for disclosure of interior structure.

Referring in detail to the drawings:

1 designates an electrical air impeller or fan of ordinary construction comprising a base 2 having an upstanding lug 3 on which a motor 4 is pivotally mounted by ears 5, the motor having a shaft 6 to which a fan 7 is keyed, and a. wire guard 8 surrounding the fan blades being fixed to the motor by screws 9. The guard comprises Wire portions 10 extending substantially radially from the motor, longitudinal portions 11 extending parallel with the shaft 6, and portions 12 extending in planes perpendicular to the shaft in spaced relation with the first-named portions 10 to enclose the fan and having ends 13 engaged with a locking button or disk 14, the center of which is on the extended axis of the motor shaft. The guard may also include further wire portions such as the circularly disposed wires 15 engaged with the longitudinal portions 11. Wires 16 conduct electrical energy for rotating the fan.

Supported from the motor and preferably by means presently described, is a heater generally designated 17 comprising a circularly arranged coil18 extending through apertures 19 in arms or blades 20 of a spider 21 and a cylinder-like heater, casing 22 having outstruck groove portions .23 to receive the ends of the arms. A drum 24 encloses the heater casing, which is thus preferably loosely supported therein.

ne transverse integral arm 25 is preferably provided for the spider, extending diametrically of the drum, the other arms being radial, and brackets 26 are attached to the diametrical arm having bent-up edges 27 extending along the edges of the radial arms and having clamping tongues 28 bent over the ends of said radial arms. The casing 22 is preferably bent into horseshoe shape for convenient construction and the outstruck groove portions 23 are provided for spacing the) casing from the drum to produce an insulation space between the casing and the drum.

The drum has a diameter approximately equal to the diameter of the fan guard. Its forward or outer end or edge is adapted to extend slightly beyond the front vertical plane of the heater casing, and it is provided with an elongated rear end 29 extending beyond the rear end of the casing for suitably spacing the spider from the motor in mount ing the heater on the motor, as will now be described.

A flanged ring 30 is provided, to be removably fixed on the rear edge of the drum by screws 31, the ring having a depending flange 32 adapted for engagement with the radial wire portions 10 of the guard when the drum end 29 is positioned around the guard and the spider structure of the heater is centrally engaged with the guard.

In the preferred mounting, the axial central portion of the spider is positioned to bear against the button 14 of the guard, and

thus bear against the same oppositely to the arm ring 30, forresiliently supporting the drum and heater parts fixed thereto from the guard and from the motor, whereby the fan may drive air over the coil.

A flanged ring 33 is fixed by means such as welding, to the forward or outer edge of the drum, the depending flange 341 of the ring extending beyond. the casing and inwardly across the perimeter of the coil so that air driven by the fan will pass from the drum in a restricted cylindrical path and the cylindrical column of air so driven will be heated throughout its entire cross section. A screen 35 is supported between the flange 34 of the ring 33 and the heater casing.

The heater is energized through wires 36,

leading to a connector plug 37 which is removably attached to a connector socket 38, the socket receiving the fan-energizing wires 16 and having connection through wires 39 with a plug 40 that may be connected with a source of current supply.

I further provide a supplemental base 41 having rubber feet 42, the base 2 being mounted on the supplemental base and secured thereto by screws 43, the supplemental base having an extended front portion 44 whereby the forwardly extending weight of the added heater may be prevented from overbalancing the motor support, when a standard motor is used in the application of the invention to an air impelling device.

The parts being provided as described, the heater may be mounted by means of the drum and the guard-engaging flange upon the heat impeller, the spider being positioned with its axial center bearing against the button of the guard and the flanged ring 30 being fixed in engagement with the guard wire by the screws 31 whereby a resilient mounting is secured and the heater is retained in firm relation with the fan.

The flanged ring 33 serves to control the shape and direction of the column of air which is driven through the device by the fan so that the air which passes from the device is all heated and the heated air is directed over a restricted path and at relatively high velocity to the space to be heated.

The connector plug 37 is connected with the socket 38 when the heater is to be used so that the heater and the fan are energized coinci- (lently. The connector plug-37 may be removed and the fan operated without heating of the air impelled thereby and if a considerable period, for example, the summer season, is to elapse without use of the heater, it may be removed from the air impeller and mav easilV be restored when required.

that I claim and desire to secure by Letters Patent is:

1. In a heater, a motor, an air impeller, a drum-supporting member fixed to the motor and having a forwardly-extending portion, a drum, a heater, and means engaging the drum with the motor including a flanged ring on one end of the drum engaged with said supporting member, and a heater-supporting spider in the other end of the drum engaged with said forwardly-extending portion for I driven by the motor and a drum-engaging member extending from the motor, a drum having a portion enclosing the fan, and means engaging the drum with the motor including a ange ring on said fan-enclosing portion of the drum and a spider in the opposite portion of the drum, the ring and spider bearing oppositely against said member for clamping the drum to said member.

3. In a heating device, including a motor, a fan, and a fan guard including the central button and supported from the motor, a drum, a heating coil circularly disposed in spaced relation with the inner surface of the drum, means supporting the coil from the drum, an annulus fixed to the outer edge of the drum and extending inwardly beyond the outer periphery of the coil and engaged with said coil supporting means, and means including said button cooperating with said coil-supporting means to engage the drum withthe guard for support thereby.

4. In a heating device, including a'motor and a fan guard supported by the motor, the guard having a wire-clampin g central button, a drum, a heating coil circularly disposed in spaced relation with the inner surface of the drum, means supporting the coil from the drum and adapted to bear against the button of the guard, and a flange removably fixed to the rear edge of the drum and bearing against the guard oppositely to the coil-supporting means for retaining the drum in engagement with the guard.

5. In a heating device including a motor, a fan guard supported by the motor, the

2. In a heater including a motor, a fanguard having a wire-clamping central button,

and a drum, a heating element disposed in spaced relation with the inner surface of the drum, means supporting the heating element from the drum and adapted to bear against the button of the guard, and a flange removably fixed to the rear end of the drum and bearing against the guard oppositely to the coil-supporting means for retaining the drum in engagement with the guard. I

In testimony whereof I aflix my signature.

JAMES H. CARMEAN. 

